From 36033422639913dad1f3146d452116522c77f753 Mon Sep 17 00:00:00 2001
From: Ian Molton <spyro@f2s.com>
Date: Sun, 24 Aug 2008 19:21:26 +0100
Subject: [PATCH] [ARM] IrDA support for e7xx

This patchset provides a fully functional SIR IrDA driver for the Toshiba
e7xx PDAs.

Signed-off-by: Ian Molton <spyro@f2s.com>
---
 arch/arm/mach-pxa/e740.c                      |  6 ++++
 arch/arm/mach-pxa/e750.c                      |  3 ++
 arch/arm/mach-pxa/eseries.c                   | 43 +++++++++++++++++++++++++++
 arch/arm/mach-pxa/eseries.h                   |  3 ++
 arch/arm/mach-pxa/include/mach/eseries-gpio.h |  2 +-
 5 files changed, 56 insertions(+), 1 deletion(-)

diff --git a/arch/arm/mach-pxa/e740.c b/arch/arm/mach-pxa/e740.c
index c57a15b..8675fd1 100644
--- a/arch/arm/mach-pxa/e740.c
+++ b/arch/arm/mach-pxa/e740.c
@@ -25,6 +25,7 @@
 #include <mach/mfp-pxa25x.h>
 #include <mach/hardware.h>
 #include <mach/udc.h>
+#include <mach/irda.h>
 
 #include "generic.h"
 #include "eseries.h"
@@ -118,6 +119,9 @@ static unsigned long e740_pin_config[] __initdata = {
 	GPIO44_BTUART_CTS,
 	GPIO45_GPIO, /* Used by TMIO for #SUSPEND */
 
+	/* IrDA */
+	GPIO38_GPIO | MFP_LPM_DRIVE_HIGH,
+
 	/* PC Card */
 	GPIO8_GPIO,   /* CD0 */
 	GPIO44_GPIO,  /* CD1 */
@@ -153,6 +157,8 @@ static void __init e740_init(void)
 	pxa2xx_mfp_config(ARRAY_AND_SIZE(e740_pin_config));
 	platform_add_devices(devices, ARRAY_SIZE(devices));
 	pxa_set_udc_info(&e7xx_udc_mach_info);
+	e7xx_irda_init();
+	pxa_set_ficp_info(&e7xx_ficp_platform_data);
 }
 
 MACHINE_START(E740, "Toshiba e740")
diff --git a/arch/arm/mach-pxa/e750.c b/arch/arm/mach-pxa/e750.c
index 640e738..1410ad7 100644
--- a/arch/arm/mach-pxa/e750.c
+++ b/arch/arm/mach-pxa/e750.c
@@ -25,6 +25,7 @@
 #include <mach/mfp-pxa25x.h>
 #include <mach/hardware.h>
 #include <mach/udc.h>
+#include <mach/irda.h>
 
 #include "generic.h"
 #include "eseries.h"
@@ -110,6 +111,8 @@ static void __init e750_init(void)
 {
 	platform_add_devices(devices, ARRAY_SIZE(devices));
 	pxa_set_udc_info(&e7xx_udc_mach_info);
+	e7xx_irda_init();
+	pxa_set_ficp_info(&e7xx_ficp_platform_data);
 }
 
 MACHINE_START(E750, "Toshiba e750")
diff --git a/arch/arm/mach-pxa/eseries.c b/arch/arm/mach-pxa/eseries.c
index d28849b..ee79e33 100644
--- a/arch/arm/mach-pxa/eseries.c
+++ b/arch/arm/mach-pxa/eseries.c
@@ -12,6 +12,8 @@
 
 #include <linux/kernel.h>
 #include <linux/init.h>
+#include <linux/gpio.h>
+#include <linux/platform_device.h>
 
 #include <asm/setup.h>
 #include <asm/mach/arch.h>
@@ -21,6 +23,7 @@
 #include <mach/hardware.h>
 #include <mach/eseries-gpio.h>
 #include <mach/udc.h>
+#include <mach/irda.h>
 
 #include "generic.h"
 
@@ -43,3 +46,43 @@ struct pxa2xx_udc_mach_info e7xx_udc_mach_info = {
 	.gpio_pullup_inverted = 1
 };
 
+static void e7xx_irda_transceiver_mode(struct device *dev, int mode)
+{
+	if (mode & IR_OFF) {
+		gpio_set_value(GPIO_E7XX_IR_OFF, 1);
+		pxa2xx_transceiver_mode(dev, mode);
+	} else {
+		pxa2xx_transceiver_mode(dev, mode);
+		gpio_set_value(GPIO_E7XX_IR_OFF, 0);
+	}
+}
+
+int e7xx_irda_init(void)
+{
+	int ret;
+
+	ret = gpio_request(GPIO_E7XX_IR_OFF, "IrDA power");
+	if (ret)
+		goto out;
+
+	ret = gpio_direction_output(GPIO_E7XX_IR_OFF, 0);
+	if (ret)
+		goto out;
+
+	e7xx_irda_transceiver_mode(NULL, IR_SIRMODE | IR_OFF);
+out:
+	return ret;
+}
+
+static void e7xx_irda_shutdown(struct device *dev)
+{
+	e7xx_irda_transceiver_mode(dev, IR_SIRMODE | IR_OFF);
+	gpio_free(GPIO_E7XX_IR_OFF);
+}
+
+struct pxaficp_platform_data e7xx_ficp_platform_data = {
+	.transceiver_cap  = IR_SIRMODE | IR_OFF,
+	.transceiver_mode = e7xx_irda_transceiver_mode,
+	.shutdown = e7xx_irda_shutdown,
+};
+
diff --git a/arch/arm/mach-pxa/eseries.h b/arch/arm/mach-pxa/eseries.h
index a83f88d..bcfc589 100644
--- a/arch/arm/mach-pxa/eseries.h
+++ b/arch/arm/mach-pxa/eseries.h
@@ -2,3 +2,6 @@ void __init eseries_fixup(struct machine_desc *desc,
 	struct tag *tags, char **cmdline, struct meminfo *mi);
 
 extern struct pxa2xx_udc_mach_info e7xx_udc_mach_info;
+extern struct pxaficp_platform_data e7xx_ficp_platform_data;
+extern int e7xx_irda_init(void);
+
diff --git a/arch/arm/mach-pxa/include/mach/eseries-gpio.h b/arch/arm/mach-pxa/include/mach/eseries-gpio.h
index 4c90b13..794bc33 100644
--- a/arch/arm/mach-pxa/include/mach/eseries-gpio.h
+++ b/arch/arm/mach-pxa/include/mach/eseries-gpio.h
@@ -43,7 +43,7 @@
 #define GPIO_E800_PCMCIA_PWR1    73
 
 /* e7xx IrDA power control */
-#define GPIO_E7XX_IR_ON          38
+#define GPIO_E7XX_IR_OFF         38
 
 /* ASIC related GPIOs */
 #define GPIO_ESERIES_TMIO_IRQ        5
-- 
2.7.4